221062385 has 8 divisors (see below), whose sum is σ = 270919296. Its totient is φ = 173086960.

The previous prime is 221062381. The next prime is 221062399. The reversal of 221062385 is 583260122.

221062385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221062385 - 2² = 221062381 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221062381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 470111 + ... + 470580.

It is an arithmetic number, because the mean of its divisors is an integer number (33864912).

Almost surely, 2^221062385 is an apocalyptic number.

It is an amenable number.

221062385 is a deficient number, since it is larger than the sum of its proper divisors (49856911).

221062385 is an equidigital number, since it uses as much as digits as its factorization.

221062385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940743.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 221062385 is about 14868.1668338770. The cubic root of 221062385 is about 604.6512435690.

The spelling of 221062385 in words is "two hundred twenty-one million, sixty-two thousand, three hundred eighty-five".